Sewing-machine



(No Model.) 3 Sheets-Sheet 1. H. H. FEPEL. SEWING MACHINE.

Ploy 176,455.

Patented June '7, 18.92

fun mnunullullml Jef /M (No Model.) a Sheets'Sheet 2.

H. H. FEPEL.

SEWING MACHINE. No. 476,455. Patented June 2,1892.

UNITED ST "res PATENT Orricn.

HENRY H. FEFEL, OF NEW YORK, N. Y., ASSIGNOR TO THE UNION SPECIALSEIVING MACHINE COMPANY, OF ILLINOIS.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 476,455, dated June 7,1892..

Application filed June 20, 1891. Serial No. 396,394. (No model.)

To all whmn it may concern.-

Be it known that I, HENRY I-I. FEFEL, of the city, county, and State ofNew York, have invented an Improvement in Sewing-Machines,

of which the following is a specification.

My invention relates to sewing-machines; and it consists of certainimprovements which are fully set forth in the following specification,and are shown in the accompanying 1o drawings, which form a partthereof.

More particularly my invention relates to sewing-machines designed forforming an improved binding-stitch upon articles.

The object of my invention is to convert the ordinary zigzagmachine-stitch simultaneously with its production into a whip-stitchsimilar in general appearances to the handmade whip-stitch. Thisbinding-stitch and the method of producing it are fully set forth andclaimed in another pending application of mine bearing even date withthis; and the present invention relates to the mechanism by which thatstitch may be produced. The machine converts an ordinary zigzag stitchformed upon the edge of one or more pieces of fabric into the appearanceof awhip-stitch by means of an auxiliary tying-thread passed about theadjacent threads of successive zigzag stitches simultaneously while theyare being passed over the edge of the fabric.

In the drawings, Figure l is a front elevation of an ordinarysewing-machine for forming the ordinary well-known zigzag stitch havingmy improvements applied thereto. Fig. 2 is a horizontal sectional viewof the same through the line a so of Fig. 1. Fig. 3 is an end elevationof the arm for operating the mechanism which carriesthe auxiliarythreadcarrier. Fig. at is a perspective view of a piece of fabricshowing the needles in the act of forming the binding; and Figs. 5, 6,7, and S are similar views showing successive steps in the formation ofthe stitches.

The particular construction of the machine for forming the zigzag stitchis immaterial to my invention and may be of any convenient construction.I prefer, however, a machine such as is set out in Letters Patent No.4012M, granted to Lorenz Muther and R. G. \Voodward on the 9th dayofApril, 1889, and in the drawings I have shown a machine of this generalcharacter. In this machine, A is the camshaft, carrying the cams foroperating the needle Z) and looper c. D is the cloth-clamp. E is a camoperated from the shaft-A through suitable gearing for rocking thebell-crank or elbow-lever F once for every two vertical reciprocationsof the needle-bar, which lever is connected by a linkf with the arm G ofthe beltcrank g. H is a link connecting the arm G and needle-guide 13.Through this bellcrank F, arm G, and links f and H the vibratingmovements are imparted to the needleguide B during the reciprocation ofthe needlebar and the needle to produce azigzag stitch.

I will now describe the parts of my invention and the manner in whichthey are applied to the foregoing well-known mechanism.

I is an arm carried by the bell-crank or elbow-lever F, having a guideor slot 11.

J is a stud upon the plate of the sewingmachine, upon which is journaleda bellcrank K, having a short arm K, provided upon its end with a ball71:, working in a sliding socket L. The sliding socket L is guided 75 inthe slot i of the arm I. Secured to the other arm K of the bell-crank Kis a threadcarrier (Z, which carries the auxiliary tyingthread which isled to it from the guides. The rocking of the bell-crank or elbow-leverF through the action of the cam E will move the arm I, rocking thebell-crank K, and reciprocating the thread-carrier (Z. The arm K whichcarries the carrier (Z, is longer than the arm K, which receives motionfrom the lever F, so that the thread-carrier (Z is moved a greaterdistance than the needle Z2 is vibrated and more rapidly. By thismechanism the carrier (Z is operated synchronously with the vibration ofthe needle-guide l3,both the bell-crank K, which carries thethreadcarrier (Z, and the needle-guide 13 receiving their movements fromthe same cam through the bell-crank or elbowwlever F.

In Fig. 5 the needle and thread-carrier are shown in their relativepositions at the commencement of the stitch, the needle Z) having justascended above the edge of the fabric and the threadcarrier (Z being tothe right of the needle Z), with its thread overthe thread 10: of theneedle. The needle I) and the threadcarrier d are now vibrated to theleft; the

threadcarrier passing to the left of the needle b and carrying itsthread under the thread of the needle. In this position the needle I)descends through the fabric, forming a stitch over the thread of thecarrier, as is shown in Fig. 6. The needle I) then rises and begins tomove back to the right, the thread-carrier synchronously moving back ata more rapid rate, so as to bring its thread over the two threads of thezigzag stich, which diverge from the place where the needle Z) passedthrough the body of the fabric toward the edge thereof, as is shown inFig. 7. The carrier (Z continues to move back to the right, so as todraw its thread under the thread of the needle Z), as is shown in Fig.8. The thread I) then descends over the edge of the fabric and completesthe zigzag stitch. The needle rises again and returns to the positionshown in Fig. 5. The tension of the thread in the carrier (Z draws thetwo threads of the zigzag stitch together, as shown.

The terms right and -left are used to describe the movements of theneedle and thread guide with reference to the relative positions thereofshown in the drawings. Thus with each lateral vibration of the needle Z)through the action of the needle-guide B in forming the zigzag stitchover the edge of the fabric the 'carrier (Z is reciprocated to the rightand left of the needle Z), so that the tying-thread passes about theadjacent threads of successive stitches and draws them together in themanner shown in Fig. l. This movement of the carrier (Z is so timed withthe vibration of the needle Z) that its thread is located upon one sideof the thread of the needle 1) during one set of vertical reciprocationsand upon the other side during the other set of vertical reciprocations.The tying-thread thus passes about the adjacent threads of successivestitches, as is shown in Fig. 4, and by its tension draws them together.

I have shown and described the invention as applied to overseaming orthe formation of bindings. It will be understood, however, that it maybe used when the needle I) during both of its vertical reciprocations(controlled by the lateral vibration of the guide B) passes through thebody of the fabric. My invention is, however, particularly designed as abindingstitch, so that the hand-whip stitch efiect may be economicallyand successfully obtained with machine-sewin g. The tying-thread may bedrawn over upon the under side of the fabric so as to be concealed bysimply pressing it over the edge of the fabric by hand.

As I have heretofore stated, I do not limit my invention to theparticular form of sewing-machine for forming the zigzag stitch which isshown in the drawings, as it is ap' parent that my invention may beapplied to any form of sewing-machine adapted to zigzag sewing; nor do Ilimit myself to the minor details of construction which have been shown,as it is apparent that they may be varied without departing from theinvention.

IVhat I claim as new, and desire to secure by Letters Patent, is

1. In a sewing-machine, the combination, with a reciprocating needle-barand its needle, of the needle-guide B, cam E, lever F, operated by thecam E, connections between the needle-guide B and lever F, whereby theneedle-guide is vibrated laterally, thread-carrier (Z, having its endadjacent to the reciprocating needle, and connections between the leverF and the thread-carrier (Z, whereby the latter is vibratedsynchronously with the needle-guide B and the needle-bar and needleguided therein.

2. In a sewing-machine, the combination, with the reciprocatingneedle-bar and its needle, of the needle-guide B, cam E, lever F,operated by said cam E, connections between the lever F andneedle-guide, whereby it is vibrated laterally, a bell-crank leverhaving one arm longer than the other, the threadcarrier (Z, carried bythe longer arm of the bell-crank lever, and connections between theshorter arm of the bell-crank lever and the lever F, whereby lateralvibrations are imparted to the needle-guide B and carrier (Zsynchronously and the carrier (Z is vibrated a greater distance than theneedle, so as to move successively to the right and left thereof.

3. In a sewing-machine, the combination, with the reciprocatingneedle-baranditsneedie, of the needle-guide B, cam E, lever F, operatedby the cam E, connections between the lever F and needle-guide B,wherebyit is vibrated laterally, a bell-crank K, journaled upon thebase-plate, a thread-carrier (Z, carri ed by the bell-crank K and havingits threadcarrying end adjacent to the needle, and a connection betweenthe lever F and bell-cran k K, whereby the latter is rockedsynchronously with the vibration of the lever F to vibrate thethread-carrier (Z.

4. In a sewing-machine, the combination, with a reciprocating needle barand needle, of a vibrating needle-guide B, a cam E, a lever F, operatedby the cam E, connections between the lever F and needle-guide B, abell-crank K, journaled upon the base-plate of the machine, athreadcarrier (Z, carried by one arm of the bell-crank K, a dependingarm carried by the lever F and having a slot 1', and a ball 76, carriedin the end of the other arm of the bell-crank K, working in the slot iof the arm I.

In testimony of which invention I have hereunto set my hand.

- HENRY ll. FEFEL.

Witnesses:

JOHN H. HOWELL, JOHN J. SLATER.

